* OpenVPN GUI is now packaged in the Windows installer.
* Extensions to Management Interface to allow greater programmatic control of OpenVPN client and server.
* topology subnet option, allowing intuitive tun-based VPN subnets having 1 IP address per client.
* DHCP proxy support for Windows clients using the route-gateway dhcp option.
* TAP-Win32 adapter can now be opened from non-administrator mode.
* PKCS #11 features for usage of cryptographic tokens ("smart cards").
* multihome option to enable UDP-based multihoming of the server on multiple interfaces.
* port-share option to allow OpenVPN and an HTTPS server to share TCP port 443.
* Users upgrading from 2.x should note that the new script-security option must be set to enable OpenVPN to run scripts.